Improvement in rocking-chairs



D. POWERS.

ROCKING CHAIR.

No. 173,557. Patented June 13, 1876.

N. PETERS, PHOTO-LITHOGRAPHER. WASHINGTON. D C.

- my invention.

UNITED rATEs PATENT FFIoE.

DAVID J. POWERS, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN ROCKING-CHAIRS.

Specification forming part of Letters Patent No. 178,557, dated June 13,1876 application filed April 1o, 1876.

T0 all whom it may concern:

Beit known that I, DAVID J. PowERs, of Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin Platform Rocking-Chairs; and I do hereby declare the following to bea full, clear, and exact description thereof, which will enable othersskilled in the art to which my invention appertains to make and use thesame, reference being had to the accompanying drawings, forming part'ofthis specication, in which- Figure l represents a vertical centralsection of a platform rocking-chair embodying Fig. 2 represents avertical transverse section of the same, taken on line :v a: drawnthrough Fig. l; and Fig. 3 represents a like section on the line y y.

Like letters of reference indicate like parts.

My invention relates to that class of rocking-chairs mounted upon aplatform; and consists in the combination of the parts employed inconnecting the chair proper to the platform, whereby the same can berocked, or held in a fixed position, as desired, and at any desiredinclination, as is hereinafter more particularly described.

In the drawing, A represents the platform, which may be made of anyknown form that will admit of securing the chair thereto. B B are therockers, and O O are the members forming the back of the chair, and maybe arranged in any known manner, the width being such as to allowtherockers to rest upon the side pieces ofthe platform. D is atransverse shaft, permanently secured to the center of the rockersimmediately over the Vcenter of the platform, as shown in Fig. l. D is atransverse cross-bar, secured at its ends to the side pieces of theplatform immediately under the shaft D. E E are fiat bands, ofindia-rubber or other suitable elastic material, which pass over theshaft D, and downward through mortises in the cross-bar, and are securedtherein by keys d passing through the bands immediately under thecross-bar. The arrangement of the bands is such as to hold the rockersfirmly on the platform, and at the same time yield sufficiently to admitof the'rocking movement of the chair thereon. The side pieces of a,adapted to enteran elongated mortise in the respective rockers, asshown'in Fig. 1, by

which means the rockers are prevented from moving longitudinally on theplatform. F is a transverse shaft, journaled to the rockers forward ofshaft D, and so arranged as to admit of a rocking movement. Permanentlyattached to each end of the shaft F is a knob, d', by which a rockingmovement is imparted to the shaft when desired. G G are depending arms,permanently attached to shaft F adjacent to the inner sides of therespective rockers, and extending downward in close proximity to theinner surface of the side pieces of the platform, as shown in Figs. land 3. The said arms are provided each with a series of notches, e,formed in the front edge, and so arranged as to receive a pin,f,permanentlysecured in the side pieces of the platform, when the arms aremoved forward by a rocking movement of the shaft, by which means therockers are so locked as to prevent them from being rocked on theplatform, and in the proper position to give any desired and fixedincline to the chair.

I do not intend to limit myself to the use of two notched arms forlocking the chair in a fixed position, as one may be sufficient for thatpurpose; nor do I limit myself to the extending of the cross-bar Dlacross from one side to the other of the platform, as short pieces orstuds, through which the bands pass, may

be used.

y DAVID J. rows-Rs. Witnesses:

N. C. GRIDLEY, N.'H. SHERBURNE.

